function defineTitle() {
	var value = getURLVar('id');
	if (value=='contact') {
		showTitle('contact');
		hideTitle('visita');
		hideTitle('trabalhe');
		document.getElementById('assunto').selectedIndex = 0;
	} else if (value=='trabalhe') {
		hideTitle('contact');
		hideTitle('visita');
		showTitle('trabalhe');
		document.getElementById('assunto').selectedIndex = 5;
	} else {
		hideTitle('contact');
		showTitle('visita');
		hideTitle('trabalhe');
		document.getElementById('assunto').selectedIndex = 0;
	}
}

function getURLVar(urlVarName) {
	//divide the URL in half at the '?'
	var urlHalves = String(document.location).split('?');
	var urlVarValue = '';
	if(urlHalves[1]){
		//load all the name/value pairs into an array
		var urlVars = urlHalves[1].split('&');
		//loop over the list, and find the specified url variable
		for(i=0; i<=(urlVars.length); i++){
			if(urlVars[i]){
				//load the name/value pair into an array
				var urlVarPair = urlVars[i].split('=');
				if (urlVarPair[0] && urlVarPair[0] == urlVarName) {
					//I found a variable that matches, load it's value into the return variable
					urlVarValue = urlVarPair[1];
				}
			}
		}
	}
	return urlVarValue;   
}

function showTitle(id) {
	document.getElementById(id).style.display = 'block';
}
function hideTitle(id) {
	document.getElementById(id).style.display = 'none';
}